CVE-2018-14619: Input Validation
First published: Fri Aug 24 2018(Updated: )
A flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. The "null skcipher" was being dropped when each af_alg_ctx was freed instead of when the aead_tfm was freed. This can cause the null skcipher to be freed while it is still in use leading to a local user being able to crash the system or possibly escalate privileges.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.15 | 4.15 |
| Linux Linux kernel | >=4.14<4.14.8 | |
| Linux Linux kernel | =4.15-rc1 | |
| Linux Linux kernel | =4.15-rc2 | |
| Linux Linux kernel | =4.15-rc3 |
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Reference Links
- http://www.securityfocus.com/bid/105200
- https://access.redhat.com/errata/RHSA-2018:2948
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14619
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b32a7dc8aef1882fbf983eb354837488cc9d54dc
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0013
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1622836
- https://bugzilla.redhat.com/show_bug.cgi?id=1622004
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- version/linux linux kernel/4.15-rc1
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- version/linux linux kernel/4.15-rc3
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